Torsion Springs are helical springs that exert a torque or rotary force. Each end of a torsion spring is attached to other components, and when those components rotate around the center of the spring, the spring resists, trying to regain its original position. While the name suggests otherwise, torsion springs are subjected to bending stress rather than torsional stress. They can store and release angular energy or statically hold a mechanism in place by deflecting the legs about the body centerline axis. Torsion springs are typically wound close but are able to have pitch to reduce friction between the coils and offer resistance to rotationally applied force (twist). torsion springs can be designed to work in a clockwise or counter-clockwise rotation, thus determining the direction of the wind, depending on the application.